Azure diagnostic setting deleted or disabled

azure

Classification:

attack

Tactic:

TA0005-defense-evasion

Technique:

T1562-impair-defenses

Set up the azure integration.

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Goal

Detect when a diagnostic setting is deleted which can disable centralized logging and metrics on Azure.

Strategy

Monitor Azure logs where @evt.name is "MICROSOFT.INSIGHTS/DIAGNOSTICSETTINGS/DELETE" and @evt.outcome is Success.

Triage and response

  1. Inspect the diagnostic setting resource which is found in @resourceId.
  2. Verify that the user ({{@usr.id}}) to determine if the removal of the resource is legitimate.
PREVIEWING: may/unit-testing